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@ARTICLE{Schtte:840182,
author = {Schütte, Kai and Barthel, Juri and Endres, Manuel and
Siebels, Marvin and Smarsly, Bernd M. and Yue, Junpei and
Janiak, Christoph},
title = {{S}ynthesis of {M}etal {N}anoparticles and {M}etal
{F}luoride {N}anoparticles from {M}etal {A}midinate
{P}recursors in 1-{B}utyl-3-{M}ethylimidazolium {I}onic
{L}iquids and {P}ropylene {C}arbonate},
journal = {ChemistryOpen},
volume = {6},
number = {1},
issn = {2191-1363},
address = {Weinheim},
publisher = {Wiley-VCH-Verl.},
reportid = {FZJ-2017-07737},
pages = {137 - 148},
year = {2017},
abstract = {Decomposition of transition-metal amidinates
[M{MeC(NiPr)2}n] [M(AMD)n; M=MnII, FeII, CoII, NiII, n=2;
CuI, n=1) induced by microwave heating in the ionic liquids
(ILs) 1-butyl-3-methylimidazolium tetrafluoroborate
([BMIm][BF4]), 1-butyl-3-methylimidazolium
hexafluorophosphate ([BMIm][PF6]),
1-butyl-3-methylimidazolium trifluoromethanesulfonate
(triflate) ([BMIm][TfO]), and 1-butyl-3-methylimidazolium
tosylate ([BMIm][Tos]) or in propylene carbonate (PC) gives
transition-metal nanoparticles (M-NPs) in non-fluorous media
(e.g. [BMIm][Tos] and PC) or metal fluoride nanoparticles
(MF2-NPs) for M=Mn, Fe, and Co in [BMIm][BF4]. FeF2-NPs can
be prepared upon Fe(AMD)2 decomposition in [BMIm][BF4],
[BMIm][PF6], and [BMIm][TfO]. The nanoparticles are stable
in the absence of capping ligands (surfactants) for more
than 6 weeks. The crystalline phases of the metal or metal
fluoride synthesized in [BMIm][BF4] were identified by
powder X-ray diffraction (PXRD) to exclusively Ni- and
Cu-NPs or to solely MF2-NPs for M=Mn, Fe, and Co. The size
and size dispersion of the nanoparticles were determined by
transmission electron microscopy (TEM) to an average
diameter of 2(±2) to 14(±4) nm for the M-NPs, except for
the Cu-NPs in PC, which were 51(±8) nm. The MF2-NPs from
[BMIm][BF4] were 15(±4) to 65(±18) nm. The average
diameter from TEM is in fair agreement with the size
evaluated from PXRD with the Scherrer equation. The
characterization was complemented by energy-dispersive X-ray
spectroscopy (EDX). Electrochemical investigations of the
CoF2-NPs as cathode materials for lithium-ion batteries were
simply evaluated by galvanostatic charge/discharge profiles,
and the results indicated that the reversible capacity of
the CoF2-NPs was much lower than the theoretical value,
which may have originated from the complex conversion
reaction mechanism and residue on the surface of the
nanoparticles.},
cin = {ER-C-2},
ddc = {540},
cid = {I:(DE-Juel1)ER-C-2-20170209},
pnm = {143 - Controlling Configuration-Based Phenomena (POF3-143)},
pid = {G:(DE-HGF)POF3-143},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:28168159},
doi = {10.1002/open.201600105},
url = {https://juser.fz-juelich.de/record/840182},
}